Terms of use


Truth and falsehood are part of the areas of research in philosophical logic and theory of knowledge (epistemology). Sentences, phrases, arguments, determinations, ideas, beliefs and the like may have a truth value (and then they are referred to as "truth-bearing", "having a truth value", or "true") or a falsehood value ("having a falsehood value" or "false").

There are a number of theories about truth and falsehood which were developed by philosophers and logicians. These include:

The theory of choice claims that truth is self-evident and requires no other evidence.

The correspondence theory of truth holds that truth corresponds to objective reality. Accordingly, an argument is true only to the degree that it expresses the state of affairs in the world.

The coherence theory considers truth to be anything which is consistent with (that is, derived from) any set of arguments. Generally speaking, the set of arguments is one which describes the true world in the best and most complete possible manner, in the opinion of those who choose it.

The consensus theory views truth as consisting only of things which a group of experts on the subject have agreed to be true.

Pragmatism sees "truth" as the success of the practical consequences of an idea.

Each of these theories may be interpreted as a definition of the basic nature of truth (and accordingly also of falsehood), or as a criterion for determining the truth value of arguments and sentences